You forget another one, if you live a long happy life and in your late 60's your mind starts going. You become senile of sorts and can't remember anything, think everyone's trying to hurt you and go all cookie cutter on the world. Or if you live perfectly happy and end up in heaven, only to find out your in heaven, forever, and ever, day after day... with no real rest. That one always scared me... just living on forever, almost like highlander but without the pretty girls.
But one thing always remains a constant, things always could be worse - and your afraid? You should be afraid! The worlds scary.
but personally speaking whether I end up a wheel chair, a arm chair, or a leather chair overseeing my minions... I shall be grateful for what I do have, and hold on to every last bit until the end.
Or just pay someone to kill me.
But perhaps that is a stage everyone goes through, realization or mortality, or immortality, or a effort consciously to reach out and figure out what the world has to offer and what you have to loose to it... But overcoming the hurdles life throws at you is part of the fun, right?